It would be nice if people who liked mine enough purchased legit copies, later ha ha. Probably a year of work in writing them (two or three thousand hours?)
But I have some short stories on FictionMania, and I think AO3, a couple free on Amazon, and pirated copies here:
https://forum.allporncomix.com/threads/selkie-tg-gender-swap-feminization-sci-fi-fantasy.719/
As for JJP's books, copying the synopses:
Slave Genesis: A secretive health farm on a remote Scottish island is the cover for an establishment devoted to the satisfaction of specialist tastes. Here the rich and famous can indulge their every desire, from SM power games to pony-girl carting, with perfect slave service and the utmost discretion. But why do so many of the slaves look the same?
Slave Exodus: When Detective Sergeant Alex Gregory has a nasty parachuting accident, it should be the end of the line for her. But when she wakes up in a new body she realises she's been given a new lease of life. Unfortunately her captors have very unusual tastes, including one for human pony racing. Alex's home is now a Spartan stable, her only clothing an elaborate harness, with a bit that ensures her silence. Will her colleagues ever be able to rescue her?
Slave Revelatiions: Detective Sergeant Alex Gregory has found herself prisoner on the slave island run by the mysterious Healthglow corporation. With the outside world convinced she is dead, she is set to join a specially chosen group of slaves on the way to South America and begin a life of toil and torment as a workhorse and pleasure pony under the control of a vicious drugs baron. Her one slim chance remains the unofficial investigation being conducted by her former colleague, DS Geordie Walker. But will Geordie allow the delectable pony-girl Millie and his own newfound interest in human equestrianism to distract him from her rescue?
Slave Acts: The fourth book in Jennifer Jane Popeās Slave series continues the story of the bizarre estalishment devoted to the satisfaction of specialist tastes, hidden from prying eyes on a remote Scottish island. Here, the rich can indulge their every desire, from SM power games to pony-girl carting, assured of the utmost discretion. But why do so many of the slaves look the same?
What none of those descriptions mention is that a young scottish trawlerman stumbles over the ponygirls on the remote island, is captured, and awakens to find himself now turned into one of the bound ponygirls. Wealthy people come to the island for BDSM and ponygirl and ponygirl bondage and masochism fun, hosted by a slightly odd group of people. One of these wealthy dudes (Andrew Lachan) tries to kidnap his favourite ponygirl to take away for his own long term personal enjoyment... but his plot is discovered and he too finds he's now a ponygirl named Bambi. Gradually we discover that the people behind the mind transplantation and synthetic body creation are not from here.
There's also a sadistic and powerful South American drug cartel guy in the later books, who would like to partner with the people and set up his own 'resort', and maybe that was where the last book was going. There was the ongoing attempt to rescue Alex, by her male colleague who's gradually been seduced into enjoying a master role in BDSM kink play, so... Who knows?